22012121443 has 8 divisors (see below), whose sum is σ = 24256649648. Its totient is φ = 19846348704.

The previous prime is 22012121381. The next prime is 22012121447. The reversal of 22012121443 is 34412121022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-22012121443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012121447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19688280 + ... + 19689397.

It is an arithmetic number, because the mean of its divisors is an integer number (3032081206).

Almost surely, 2^22012121443 is an apocalyptic number.

22012121443 is a deficient number, since it is larger than the sum of its proper divisors (2244528205).

22012121443 is a wasteful number, since it uses less digits than its factorization.

22012121443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39377733.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 22012121443 its reverse (34412121022), we get a palindrome (56424242465).

The spelling of 22012121443 in words is "twenty-two billion, twelve million, one hundred twenty-one thousand, four hundred forty-three".